mathjs/docs/reference/functions/asin.md

Function asin

Calculate the inverse sine of a value.

For matrices, the function is evaluated element wise.

Syntax

math.asin(x)

Parameters

Parameter	Type	Description
x	Number | BigNumber | Boolean | Complex | Array | Matrix | null	Function input

Returns

Type	Description
Number | BigNumber | Complex | Array | Matrix	The arc sine of x

Examples

math.asin(0.5);           // returns Number 0.5235987755982989
math.asin(math.sin(1.5)); // returns Number ~1.5

math.asin(2);             // returns Complex 1.5707963267948966 -1.3169578969248166 i

See also

sin, atan, acos